Zobrazeno 1 - 10
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pro vyhledávání: '"Ebrahim, Hajar"'
Autor:
Ebrahim, Hajar, Ahmadpour, Monireh
In this paper we have studied the effect of deformation and temperature on holographic entanglement entropy and mutual information between two subsystems in a deformed field theory at finite temperature. The $T{\overline{T}}$ deformation operator in
Externí odkaz:
http://arxiv.org/abs/2301.07242
Autor:
Ebrahim, Hajar, Nafisi, Gol-Mohammad
Publikováno v:
Phys. Rev. D 102, 106007 (2020)
This note contains discussions on the entanglement entropy and mutual information of a strongly coupled field theory with a critical point which has a holographic dual. We investigate analytically, in the specific regimes of parameters, how these non
Externí odkaz:
http://arxiv.org/abs/2002.09993
Autor:
Ebrahim, Hajar, Ali-Akbari, Mohammad
The dependence of the rescaled equilibration time on different parameters of the field theories with a holographic dual has been investigated in this paper. We consider field theories with nonzero chemical potential at finite temperature which are du
Externí odkaz:
http://arxiv.org/abs/1712.08777
Autor:
Ali-Akbari, Mohammad, Ebrahim, Hajar
Publikováno v:
Phys. Rev. D 89, 065029 (2014)
We discuss the (spontaneous) chiral symmetry breaking in a strongly coupled anisotropic quark-gluon plasma (QGP) in the presence of the magnetic field, using holography. The physical quantities related to the chiral symmetry breaking (m;B_c) distingu
Externí odkaz:
http://arxiv.org/abs/1309.4715
Autor:
Ali-Akbari, Mohammad, Ebrahim, Hajar
In the AdS/CFT framework meson thermalization in the presence of a constant external magnetic field in a strongly coupled gauge theory has been studied. In the gravitational description the thermalization of mesons corresponds to the horizon formatio
Externí odkaz:
http://arxiv.org/abs/1211.1637
Autor:
Ali-Akbari, Mohammad, Ebrahim, Hajar
In gauge/gravity duality framework the thermalization of mesons in strongly coupled (p+1)-dimensional gauge theories is studied for a general Dp-Dq system, q>=p, using the flavour Dq-brane as a probe. Thermalization corresponds to the horizon formati
Externí odkaz:
http://arxiv.org/abs/1203.3425
Autor:
Ebrahim, Hajar, Headrick, Matthew
Thin-shell AdS-Vaidya spacetimes can be considered as holographic models of the thermalization process in strongly-coupled conformal field theories following a rapid injection of energy from an external source. While the expected thermalization time
Externí odkaz:
http://arxiv.org/abs/1010.5443
Publikováno v:
JHEP 0803:074,2008
Using higher order corrections we argue that five dimensional N=2 and N=4 small black holes exhibit supersymmetry enhancement in near horizon geometry leading to eight and sixteen supercharges, respectively. Using this enhancement at supergravity lev
Externí odkaz:
http://arxiv.org/abs/0712.4070
Autor:
Alishahiha, Mohsen, Ebrahim, Hajar
Publikováno v:
JHEP0611:017,2006
By making use of the entropy function formalism we study the generalized attractor equations in the four dimensional N=2 supergravity in presence of higher order corrections. This result might be used to understand a possible ensemble one could assoc
Externí odkaz:
http://arxiv.org/abs/hep-th/0605279
Autor:
Alishahiha, Mohsen, Ebrahim, Hajar
Publikováno v:
JHEP0603:003,2006
We study the entropy of non-supersymmetric extremal black holes which exhibit attractor mechanism by making use of the entropy function. This method, being simple, can be used to calculate corrections to the entropy due to higher order corrections to
Externí odkaz:
http://arxiv.org/abs/hep-th/0601016